:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #647084;
  --line: #dbe2ec;
  --blue: #1664d9;
  --blue-deep: #0d3f92;
  --cyan: #11a6c9;
  --orange: #f07b27;
  --green: #17845b;
  --bg: #f7f9fc;
  --panel: #ffffff;
  --shadow: 0 20px 50px rgba(23, 38, 64, 0.12);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; color: var(--ink); background: var(--bg); letter-spacing: 0; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.site-header { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 76px; padding: 14px clamp(18px, 5vw, 72px); background: rgba(255,255,255,.94); border-bottom: 1px solid rgba(219,226,236,.85); backdrop-filter: blur(14px); }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 210px; }
.brand-mark { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 8px; color: #fff; font-weight: 800; background: #fff; border: 1px solid var(--line); overflow: hidden; }
.brand-mark img { width: 100%; height: 100%; object-fit: contain; padding: 4px; }
.brand strong, .brand small { display: block; }
.brand small { margin-top: 3px; color: var(--muted); font-size: 12px; }
.nav { display: flex; align-items: center; gap: 26px; color: #3d485c; font-size: 15px; }
.nav a { padding: 8px 0; }
.nav a:hover { color: var(--blue); }
.header-action, .button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 20px; border-radius: 6px; font-weight: 700; }
.header-action, .button.primary { color: #fff; background: var(--blue); box-shadow: 0 12px 28px rgba(22,100,217,.24); }
.button.secondary { color: var(--blue-deep); background: #eaf2ff; border: 1px solid #cbdcf7; }
.hero { display: block; min-height: auto; padding: 0 0 clamp(26px,4vw,44px); background: #fff; overflow: hidden; }
.hero-copy {
  max-width: 1040px;
  margin: 0 auto;
  padding: clamp(22px, 3.5vw, 38px) clamp(18px, 5vw, 72px) 0;
  text-align: center;
}

.eyebrow { margin: 0 0 12px; color: var(--blue); font-size: 14px; font-weight: 800; }
h1,h2,h3,p { margin-top: 0; }
h1 { margin-bottom: 22px; font-size: clamp(46px,7vw,86px); line-height: 1.02; }
h2 { margin-bottom: 14px; font-size: clamp(30px,4vw,46px); line-height: 1.14; }
h3 { margin-bottom: 10px; font-size: 22px; line-height: 1.25; }
.hero-text { max-width: 820px; margin: 0 auto; color: #3d485c; font-size: clamp(17px,2vw,21px); line-height: 1.8; }
.hero-summary { max-width: 780px; margin: 0 auto; color: #334155; font-size: clamp(18px,2vw,24px); line-height: 1.65; font-weight: 800; }
.hero-copy.compact .hero-actions { margin-top: 22px; }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 30px; }
.city-visual { position: relative; margin: 0; overflow: hidden; width: 100%; height: clamp(300px,48vw,560px); background: #dce8f5; }
.city-visual img { width: 100%; height: 100%; object-fit: cover; }
.city-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 54%, rgba(10,24,48,.62)); }
.city-visual figcaption { position: absolute; left: clamp(18px,5vw,72px); bottom: 22px; z-index: 1; color: #fff; font-weight: 800; }
.section { padding: clamp(58px,7vw,96px) clamp(18px,5vw,72px); }
.section-heading { max-width: 850px; margin: 0 auto 34px; text-align: center; }
.section-heading p:not(.eyebrow) { color: var(--muted); font-size: 17px; line-height: 1.8; }
.product-band { background: #fff; }
.product-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; max-width: 1280px; margin: 0 auto; }
.product-card { display: grid; grid-template-rows: 300px 1fr; min-height: 720px; overflow: hidden; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow); }
.product-card figure { display: grid; place-items: center; margin: 0; padding: 34px; background: #fff; overflow: hidden; }
.product-card figure img { width: min(72%, 320px); height: auto; object-fit: contain; object-position: center; }
.product-card.featured figure { background: #fff; }
.product-content { display: grid; grid-template-rows: auto minmax(104px, auto) 1fr auto; gap: 16px; padding: 30px; }
.tag { display: inline-flex; margin-bottom: 14px; padding: 6px 10px; color: var(--blue-deep); font-size: 13px; font-weight: 800; background: #eaf2ff; border-radius: 6px; }
.product-content p, .model-card p, .contact-section p { color: var(--muted); line-height: 1.75; }
.product-content h3 { margin: 0; min-height: 56px; display: flex; align-items: flex-start; }
.product-content p { margin: 0; }
.product-content ul { display: grid; align-content: start; gap: 12px; margin: 0; padding: 0; list-style: none; }
.product-content li { position: relative; padding-left: 20px; color: #334155; line-height: 1.6; }
.product-content li::before { content: ""; position: absolute; top: 10px; left: 0; width: 8px; height: 8px; border-radius: 50%; background: var(--green); }
.text-link { align-self: end; color: var(--blue); font-size: 14px; font-weight: 800; }
.text-link:hover { color: var(--orange); }
.model-band { background: #eef5fb; }
.model-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; max-width: 1180px; margin: 0 auto; }
.model-card { min-height: 225px; padding: 26px; background: #fff; border: 1px solid #cfdbea; border-radius: 8px; }
.model-card span { display: inline-grid; place-items: center; width: 46px; height: 46px; margin-bottom: 20px; color: #fff; font-weight: 900; border-radius: 8px; background: var(--blue-deep); }
.model-card.accent { border-color: #b9d6f5; background: linear-gradient(180deg,#fff,#f6fbff); }
.model-card.accent span { background: var(--orange); }
.model-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 26px; }

.news-band { background: #fff; }
.news-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 14px; max-width: 1080px; margin: -8px auto 18px; padding: 12px 16px; color: #526070; font-size: 14px; background: #f5f8fc; border: 1px solid var(--line); border-radius: 8px; }
.news-toolbar span:last-child { color: var(--blue-deep); font-weight: 900; }
.news-list { display: grid; gap: 14px; max-width: 1080px; margin: 0 auto; }
.news-item { display: grid; grid-template-columns: 126px minmax(0,1fr) 112px; gap: 22px; align-items: center; padding: 22px 24px; background: #fff; border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 12px 30px rgba(23,38,64,.08); }
.news-item time { display: grid; place-items: center; min-height: 74px; color: var(--blue-deep); font-weight: 900; background: #eef5ff; border: 1px solid #d7e6fb; border-radius: 8px; }
.news-main { display: grid; gap: 8px; min-width: 0; }
.news-tag { width: fit-content; padding: 4px 8px; color: var(--green); font-size: 12px; font-weight: 900; background: #e9f7f0; border-radius: 6px; }
.news-item h3 { margin: 0; font-size: 21px; line-height: 1.35; }
.news-item h3 a:hover { color: var(--blue); }
.news-item p { margin: 0; color: var(--muted); line-height: 1.75; }
.news-side { display: grid; justify-items: end; gap: 10px; }
.news-views { color: #526070; font-size: 13px; font-weight: 800; white-space: nowrap; }
.news-read { display: inline-flex; align-items: center; justify-content: center; min-width: 72px; min-height: 36px; color: #fff; font-size: 14px; font-weight: 900; background: var(--blue); border-radius: 6px; }
.news-read:hover { background: var(--blue-deep); }
.news-more { display: flex; justify-content: center; margin-top: 26px; }
.contact-section { display: grid; grid-template-columns: minmax(0,1fr) 380px; gap: 34px; align-items: center; margin: 0 clamp(18px,5vw,72px) clamp(50px,7vw,90px); padding: clamp(34px,6vw,62px); color: #fff; background: linear-gradient(135deg,#12376f,#1664d9 58%,#0c9bb7); border-radius: 8px; }
.contact-section .eyebrow, .contact-section p { color: rgba(255,255,255,.84); }
.contact-section h2 { max-width: 790px; }
.contact-panel { display: grid; gap: 12px; padding: 18px; background: rgba(255,255,255,.13); border: 1px solid rgba(255,255,255,.24); border-radius: 8px; }
.contact-line { display: block; width: 100%; padding: 16px; text-align: left; font: inherit; background: rgba(255,255,255,.95); border: 0; border-radius: 6px; cursor: pointer; }
.contact-line span, .contact-line strong, .contact-line em { display: block; }
.contact-line span { margin-bottom: 6px; color: var(--muted); font-size: 13px; }
.contact-line strong { color: var(--ink); font-size: 20px; }
.contact-line em { margin-top: 6px; color: var(--green); font-size: 13px; font-style: normal; font-weight: 700; }
.contact-copy:hover { transform: translateY(-1px); }
.copy-toast { position: fixed; left: 50%; bottom: 24px; z-index: 50; max-width: min(92vw, 420px); padding: 12px 16px; color: #fff; font-size: 14px; line-height: 1.5; text-align: center; background: rgba(14, 27, 48, .94); border-radius: 6px; box-shadow: 0 18px 42px rgba(14, 27, 48, .22); opacity: 0; pointer-events: none; transform: translate(-50%, 12px); transition: opacity .2s ease, transform .2s ease; }
.copy-toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
.miniapp-box { display: grid; gap: 12px; align-items: center; padding: 14px; background: rgba(255,255,255,.95); border-radius: 6px; }
.miniapp-qrcode { width: 100%; height: auto; border-radius: 6px; border: 1px solid #bfd2ec; background: #fff; }
.qr-placeholder { display: grid; place-items: center; width: 112px; height: 112px; color: var(--blue-deep); font-size: 14px; font-weight: 800; background: linear-gradient(90deg,#d8e5f7 1px,transparent 1px), linear-gradient(#d8e5f7 1px,transparent 1px), #f7fbff; background-size: 14px 14px; border: 1px solid #bfd2ec; border-radius: 6px; }
.miniapp-box p { margin: 0; color: var(--ink); font-size: 14px; line-height: 1.7; }
.site-footer { display: flex; justify-content: space-between; gap: 18px; padding: 26px clamp(18px,5vw,72px); color: #617085; font-size: 13px; background: #fff; border-top: 1px solid var(--line); }
.site-footer p { margin: 0; }
@media (max-width: 980px) { .site-header { align-items: flex-start; flex-wrap: wrap; } .nav { order: 3; width: 100%; justify-content: flex-start; gap: 22px; } .product-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .contact-section { grid-template-columns: 1fr; } .model-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .news-item { grid-template-columns: 1fr; align-items: start; } .news-side { justify-items: start; } }
@media (max-width: 640px) { .product-grid { grid-template-columns: 1fr; } .product-card { min-height: auto; } .product-content { grid-template-rows: auto; } .product-content h3 { min-height: auto; } .product-card figure img { width: min(70%, 220px); } .site-header { position: static; min-height: 0; } .brand { min-width: 0; } .header-action { min-height: 40px; padding: 0 14px; font-size: 14px; } h1 { font-size: 44px; } h2 { font-size: 30px; } .product-card { grid-template-rows: 280px 1fr; } .product-content, .model-card { padding: 22px; } .model-grid { grid-template-columns: 1fr; } .contact-section { margin-inline: 0; border-radius: 0; } .site-footer { display: block; } .site-footer p + p { margin-top: 8px; } }